675
FZUS51 KBOX 311704
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
104 PM EDT FRI JUL 31 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-010600-
104 PM EDT FRI JUL 31 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LIGHT N WINDS EARLY FRIDAY BECOME SW FRIDAY AFTERNOON 5-10 KTS
WITH SEAS 2-4 FEET. AS HIGH PRESSURE MOVES OVERHEAD FRIDAY SEAS
SHOULD START TO DIMINISH HEADING INTO THE WEEKEND, 2-3 FEET SAT-SUN.
LOW PRESSURE APPROACHES WITH RAIN SUNDAY NIGHT AND MONDAY.
ANZ250-010600-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 9 SECONDS AND E 2 FT AT 6 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NE
2 FT AT 6 SECONDS AND SE 2 FT AT 9 SECONDS.
SAT
W WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
AROUND 2 FT. WAVE DETAIL: SE 2 FT AT 9 SECONDS AND SW 1 FOOT AT
2 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
2 FT AT 3 SECONDS AND SE 2 FT AT 9 SECONDS.
SUN
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT
AT 3 SECONDS AND SE 2 FT AT 7 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT IN THE
EVENING. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND SE
2 FT AT 8 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-010600-
MASSACHUSETTS BAY AND IPSWICH BAY-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: E 2 FT AT 6 SECONDS AND NW 1 FOOT AT 4 SECONDS.
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. SEAS
AROUND 2 FT. WAVE DETAIL: E 2 FT AT 6 SECONDS AND SE 1 FOOT AT
2 SECONDS.
SAT
NW WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. SEAS
AROUND 2 FT IN THE MORNING, THEN 1 FOOT OR LESS. WAVE DETAIL: SW
1 FOOT AT 2 SECONDS AND E 1 FOOT AT 6 SECONDS, BECOMING S 1 FOOT
AT 2 SECONDS AND E 1 FOOT AT 6 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SE 1 FOOT AT 4 SECONDS AND E 1 FOOT AT 9 SECONDS.
SUN
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SE
2 FT AT 5 SECONDS AND E 1 FOOT AT 9 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT,
DIMINISHING TO 5 TO 10 KT AFTER MIDNIGHT. SEAS AROUND 2 FT. WAVE
DETAIL: S 2 FT AT 4 SECONDS AND E 1 FOOT AT 8 SECONDS. A CHANCE
OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS AROUND
2 FT. SHOWERS LIKELY.
MON NIGHT
SW WINDS 5 TO 10 KT WITH GUSTS UP TO 20 KT. SEAS
AROUND 2 FT. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-010600-
CAPE COD BAY-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
NW WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 2 FT AT 5 SECONDS AND SE 1 FOOT AT 10 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 4 SECONDS AND N 1 FOOT AT 5 SECONDS.
SAT
SW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
1 FOOT OR LESS, THEN AROUND 2 FT IN THE AFTERNOON. WAVE DETAIL:
SW 1 FOOT AT 2 SECONDS AND NE 1 FOOT AT 4 SECONDS, BECOMING SW
1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 4 SECONDS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND NE
1 FOOT AT 4 SECONDS, BECOMING SW 1 FOOT AT 2 SECONDS AND E 1 FOOT
AT 4 SECONDS.
SUN
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND E 1 FOOT
AT 6 SECONDS.
SUN NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT IN THE EVENING,
THEN 1 FOOT OR LESS. WAVE DETAIL: S 1 FOOT AT 2 SECONDS AND E
1 FOOT AT 8 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON THROUGH TUE
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 1 FOOT OR LESS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-010600-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
NW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: SE 3 FT AT 9 SECONDS AND NE 2 FT AT 6 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: SE
3 FT AT 9 SECONDS AND NE 2 FT AT 6 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 9 SECONDS AND SW 1 FOOT AT 3 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE 3 FT
AT 7 SECONDS AND SW 1 FOOT AT 3 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 7 SECONDS AND SW 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS
AFTER MIDNIGHT.
MON AND MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-010600-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
W WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 4 FT AT 9 SECONDS AND NW 2 FT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND E 2 FT AT 6 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
SAT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT
AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT
8 SECONDS AND SW 2 FT AT 3 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND SE
3 FT AT 7 SECONDS. SHOWERS LIKELY AFTER MIDNIGHT.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. SHOWERS LIKELY.
MON NIGHT AND TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO AROUND 10 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-010600-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: N 3 FT AT 4 SECONDS AND S 3 FT AT 9 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SW 3 FT
AT 4 SECONDS AND S 3 FT AT 9 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT
AT 6 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND
S 3 FT AT 7 SECONDS. SHOWERS LIKELY WITH A CHANCE OF TSTMS AFTER
MIDNIGHT.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 3 TO
5 FT. SHOWERS LIKELY.
MON NIGHT AND TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO AROUND 10 KT. SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 4 TO 5 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-010600-
NANTUCKET SOUND-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
W WINDS AROUND 5 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 4 SECONDS AND E 1 FOOT AT 6 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 4 SECONDS AND E 1 FOOT AT 7 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND NE 1 FOOT AT 6 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT
SW WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 3 SECONDS AND NE 1 FOOT AT 8 SECONDS.
SUN
S WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: S
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 8 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 3 SECONDS AND
S 1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON THROUGH TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 10 TO 15 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-010600-
VINEYARD SOUND-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 2 FT AT 9 SECONDS AND SW 1 FOOT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 8 SECONDS AND SW 1 FOOT AT 5 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT
AT 3 SECONDS AND SW 2 FT AT 9 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND SW 2 FT AT 8 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW 2 FT
AT 5 SECONDS AND SW 1 FOOT AT 8 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 2 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND
S 1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. SHOWERS LIKELY.
MON NIGHT AND TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO 5 TO 10 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-010600-
BUZZARDS BAY-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: SW 1 FOOT AT 4 SECONDS AND S 1 FOOT AT 8 SECONDS. A
SLIGHT CHANCE OF SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: SW
1 FOOT AT 3 SECONDS AND E 1 FOOT AT 5 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH GUSTS
UP TO 20 KT IN THE AFTERNOON. SEAS AROUND 2 FT. WAVE DETAIL: SW
2 FT AT 4 SECONDS AND E 1 FOOT AT 8 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 TO 3 NM.
SAT NIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
SW 2 FT AT 4 SECONDS AND E 1 FOOT AT 5 SECONDS.
SUN
S WINDS 5 TO 10 KT. GUSTS UP TO 20 KT IN THE AFTERNOON.
SEAS AROUND 2 FT. WAVE DETAIL: SW 1 FOOT AT 4 SECONDS AND S
1 FOOT AT 8 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT 4 SECONDS AND S
1 FOOT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT. SEAS 2 TO
4 FT. SHOWERS LIKELY.
MON NIGHT AND TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO 5 TO 10 KT. SEAS 2 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-010600-
RHODE ISLAND SOUND-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 9 SECONDS AND W 2 FT AT 4 SECONDS. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: SE
3 FT AT 7 SECONDS AND SW 1 FOOT AT 7 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 9 SECONDS AND
SW 2 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 TO 3 NM.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT
8 SECONDS AND SW 2 FT AT 5 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND S
2 FT AT 7 SECONDS. SHOWERS LIKELY WITH A CHANCE OF TSTMS AFTER
MIDNIGHT.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. SHOWERS LIKELY.
MON NIGHT
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS AND TSTMS.
TUE
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 10 TO 15 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-010600-
BLOCK ISLAND SOUND-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: S 3 FT AT 9 SECONDS AND SW 1 FOOT AT 4 SECONDS. A SLIGHT
CHANCE OF SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND E 1 FOOT AT 8 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 TO 3 NM.
SAT
SW WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 3 FT
AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 2 FT AT 3 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S 2 FT AT
8 SECONDS AND SW 1 FOOT AT 5 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: SW 2 FT AT 4 SECONDS AND S
2 FT AT 7 SECONDS. SHOWERS LIKELY WITH A CHANCE OF TSTMS AFTER
MIDNIGHT.
MON
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 25 KT. SEAS 2 TO
4 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. A CHANCE OF SHOWERS AND TSTMS.
TUE
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
WINDS AND SEAS HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-010600-
BOSTON HARBOR-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
TONIGHT
S WINDS 5 TO 10 KT, BECOMING SW AFTER MIDNIGHT. WAVES
1 FOOT OR LESS. PATCHY FOG AFTER MIDNIGHT WITH VSBY 1 TO 3 NM.
SAT
W WINDS AROUND 5 KT, BECOMING SE IN THE AFTERNOON. WAVES
1 FOOT OR LESS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
SUN
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. WAVES 1 FOOT OR LESS, THEN AROUND 2 FT IN THE
AFTERNOON.
SUN NIGHT
S WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT IN THE EVENING, THEN 1 FOOT OR LESS.
A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES AROUND
2 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON NIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A CHANCE OF
SHOWERS AND TSTMS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-010600-
NARRAGANSETT BAY-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT. A
SLIGHT CHANCE OF SHOWERS AND TSTMS.
TONIGHT
SW WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SAT
SW WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. WAVES
AROUND 2 FT. PATCHY FOG IN THE MORNING.
SAT NIGHT
S WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SUN
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT IN THE
AFTERNOON. WAVES AROUND 2 FT.
SUN NIGHT
S WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. WAVES 2 TO
3 FT. SHOWERS LIKELY WITH A CHANCE OF TSTMS.
MON NIGHT
SW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. WAVES
2 TO 3 FT. A CHANCE OF SHOWERS AND TSTMS.
TUE
SW WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. WAVES 2 TO 3 FT.
WINDS AND WAVES HIGHER IN AND NEAR TSTMS.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-010600-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: S 4 FT AT 9 SECONDS AND NE 2 FT AT 6 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
3 FT AT 9 SECONDS AND NE 2 FT AT 6 SECONDS.
SAT
W WINDS AROUND 5 KT, BECOMING S IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: S 3 FT AT 8 SECONDS AND SW 1 FOOT AT
3 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND S 2 FT AT 4 SECONDS.
SUN AND SUN NIGHT
S WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 8 SECONDS AND SW 2 FT AT
4 SECONDS.
MON AND MON NIGHT
S WINDS 15 TO 20 KT, BECOMING SW 10 TO
15 KT. GUSTS UP TO 25 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT
6 SECONDS AND E 2 FT AT 9 SECONDS. A CHANCE OF SHOWERS.
TUE AND TUE NIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT. SEAS
2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-010600-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
NW WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE
DETAIL: S 4 FT AT 9 SECONDS AND N 3 FT AT 5 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. GUSTS UP TO 20 KT AFTER MIDNIGHT.
SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT AT 8 SECONDS AND NE 2 FT AT
6 SECONDS. PATCHY FOG. VSBY 1 NM OR LESS.
SAT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 8 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
4 FT AT 8 SECONDS AND SW 1 FOOT AT 3 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT
AT 8 SECONDS AND W 1 FOOT AT 4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 7 SECONDS AND
SW 2 FT AT 4 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON THROUGH TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 3 TO 5 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-010600-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
W WINDS 5 TO 10 KT. SEAS 4 TO 5 FT. WAVE
DETAIL: S 4 FT AT 8 SECONDS AND N 3 FT AT 6 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS AROUND 4 FT. WAVE DETAIL: S
4 FT AT 8 SECONDS AND NE 2 FT AT 6 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
SAT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 4 FT
AT 9 SECONDS AND W 1 FOOT AT 3 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 NM OR LESS.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 1 FOOT AT 4 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT
AT 8 SECONDS AND SW 1 FOOT AT 4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND
SE 3 FT AT 7 SECONDS. A CHANCE OF SHOWERS AFTER MIDNIGHT.
MON THROUGH TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS AROUND 10 KT. SEAS 4 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-010600-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
104 PM EDT FRI JUL 31 2026
THIS AFTERNOON
W WINDS AROUND 5 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: S 4 FT AT 8 SECONDS AND NW 3 FT AT 6 SECONDS.
TONIGHT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND W 1 FOOT AT 2 SECONDS. PATCHY FOG AFTER
MIDNIGHT WITH VSBY 1 NM OR LESS.
SAT
SW WINDS AROUND 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: S 3 FT
AT 9 SECONDS AND SW 2 FT AT 4 SECONDS. PATCHY FOG. VSBY 1 NM OR
LESS, INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
SAT NIGHT
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S
3 FT AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN
S WINDS 5 TO 10 KT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT
AT 8 SECONDS AND SW 2 FT AT 4 SECONDS.
SUN NIGHT
S WINDS 10 TO 15 KT. GUSTS UP TO 25 KT AFTER
MIDNIGHT. SEAS AROUND 3 FT. WAVE DETAIL: S 3 FT AT 4 SECONDS AND
SE 3 FT AT 7 SECONDS. SHOWERS LIKELY AFTER MIDNIGHT.
MON
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 4 TO
6 FT. SHOWERS LIKELY.
MON NIGHT AND TUE
SW WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT,
DIMINISHING TO AROUND 10 KT. SEAS 5 TO 7 FT. A CHANCE OF SHOWERS.
TUE NIGHT
SW WINDS AROUND 10 KT. SEAS 5 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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